WIB1 CT Powered Time Overcurrent and Earth Current Relay (WIB1)
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Configuration
WIB1 – ANSI 50, 51
The WIB1 is a self/ct powered protection relay. No aux. voltage needed. Designed for harsh environment from -40°C up to +85°C. 20 years maintenance free.
Available Variants of the WIB1
WIB12PE | Self/ct powered Time Overcurrent and Earth Current protection relay, i. e. no aux. voltage needed. Designed for harsh environment from −40°C up to +85°C. 20 years maintenance-free. Plug-in screw terminals, with connectors for test winding. |
WIB12PEB | Self/ct powered Time Overcurrent and Earth Current protection relay, i. e. no aux. voltage needed. Designed for harsh environment from −40°C up to +85°C. 20 years maintenance-free. Plug-in screw terminals, with connectors for test winding. With blocking funktion. |
WIB12FE | Self/ct powered Time Overcurrent and Earth Current protection relay, i. e. no aux. voltage needed. Designed for harsh environment from −40°C up to +85°C. 20 years maintenance-free. Fixed screw terminal. |
WIC1+WIB1+WIP1 Accessory: Flag Indicators
WI1 SZ4, see separate page | Flag indicator, for a mechanical trip signaling independent of external (auxiliary) voltages. |
WI1 SZ5, see separate page | Flag indicator, for a mechanical trip signaling independent of external (auxiliary) voltages, including a bistable signal contact 230 V AC, 3 A. |
CT/Self-powered – No auxiliary supply voltage needed
Designed for harsh environment
Compact form factor
The WI Line devices are self-powered – The protection relay does not need supply voltages for Ring Main Units (RMUs).
The primary application of WI Line devices is Feeder Protection (also as backup) that does not need supply voltage.